Sub-threshold strangeness and charm production in UrQMD

16th International Conference on Strangeness in Quark Matter

Steinheimer, J.^1 ; Bleicher, M.^1,2

Frankfurt Institute for Advanced Studies, Ruth-Moufang-Str. 1, Frankfurt am Main

60438, Germany^1

Institut für Theoretische Physik, Goethe Universität Frankfurt, Max-von-Laue-Strasse 1, Frankfurt am Main

D-60438, Germany^2

关键词: Baryon density;    Baryonic resonances;    Beam energies;    Charm physics;    Nuclear collisions;    Production mechanisms;    Production yield;    Subthreshold;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/779/1/012017/pdf
DOI  :  10.1088/1742-6596/779/1/012017

来源: IOP

【 摘 要 】

We present recent results on the sub-threshold production of strange and charmed hadrons in nuclear collisions. In particular we highlight how the excitation and decay of heavy baryonic resonances can be used to describe the production yield of φ mesons at the SIS18 accelerator and show how this production mechanism also consistently describes the φ nuclear transparency ratio. Including even more massive baryonic resonances in the model we are able to extend our approach and make, for the first time, realistic predictions on the sub-threshold production of J/Ψ and Λcin nuclear collisions at the SIS100 accelerator at FAIR. We find that even at a beam energy of Elab= 6 A GeV, charm physics is feasible at the CBM experiment, which opens up new opportunities to study charmed hadron properties at large baryon densities.